[Shiraki Yuko] A Takara Eizo exclusive title. My marriage to my wife has lasted about four years. My real mother has already passed away, so my father is the only parent I have left. Currently, my father, my wife, and I live together, and my wife's mother also joins us at times. As my stepmother, she occasionally stays over at our house, and we've been enjoying peaceful family life. But one day, I discovered my father was having an affair with my wife's mother... I was left completely frozen in shock. This is the dramatic story of a family caught in such a shocking incident.